Question

Dado tg x/2 = 4, então tg x vale:

a)-5/4
b) -5/12
c) -8/15
d)-3/4
e) -8/5


Aaa me respondem pfvv

Answer 1

Resposta:

Explicação passo-a-passo:

$tgx=\frac{2tg\frac{x}{2}}{1-tg^{2}\frac{x}{2}}\\\\tgx=\frac{2.4^{2}}{1-4^{2}}\\\\tgx=-\frac{32}{15}$